I.S. EN ISO 4545-3:2018
Current
The latest, up-to-date edition.
METALLIC MATERIALS - KNOOP HARDNESS TEST - PART 3: CALIBRATION OF REFERENCE BLOCKS (ISO 4545-3:2017)
Hardcopy , PDF
English
01-01-2018
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
Dates of withdrawal of national standards are available from NSAI.
European foreword
Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Manufacture of the reference block
5 Calibration machine
6 Calibration procedure
7 Number of indentations
8 Uniformity of hardness
9 Marking
10 Calibration certificate
11 Validity
Annex A (informative) - Adjustment of Koehler illumination
systems
Annex B (informative) - Uncertainty of mean hardness
value of hardness-reference blocks
Bibliography
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